Automatic change-speed gearing.



J. J. A. BILLET.

AUTOMATIC CHANGE SPEED GBARING.

APPLICATION FILED OCT. 6. 1913. 1,120,591 Patented Dec. 8, 1914.

JEAN JACQUES ALFRED BILLET, OF ST. DIE, FRANCE.

AUTOMATIC CHANGE-SPEED GEARING.

Specification of Letters Patent.

Patented Dec. 8, 1914.

Application filed October 6, 1913. Serial No. 793,697.

To all whom it may concern:

Be it known that I, JEAN JACQUES ALFRED BILLET, a citizen of the Republic of France, and resident of St. Di, Vosges, France, have invented new and useful Automatic Change- Speed Gearing, which is fully set forth in the following specification.

Hitherto the output of continuous spinning looms operating at a constant speed, was limited by the critical speed of the thread on the small diameter of winding on the tube, and the benefit of the greatest speed which could be attained on the large diameter, was lost. In order to remedy the drawbacks in question, systems have been suggested which by means of mechanical or electrical devices, produced two or more effective speeds. But apart from the fact that the systems in question readily get out of order and are liable to accidental stops, they give merely an approximate solution of the problem, which is to obtain an absolutely progressive speed as function of the different stages of Winding on the tube, which is an essential condition for the proper manufacture and enables the greatest efficiency to be obtained from the machines.

The device forming the subject of this invention, makes it possible, on the contrary, to bring about a continuous variation of speed according to the diameter of winding, and beginning with the formation of the bottom of the spool or cop.

This device is illustrated, by way of example, in the accompanying drawing, in which- Figure 1 is a longitudinal section on line A-A of Fig. 2, and Fig. 2 is a cross-section on line B-B of Fig. l.

The apparatus comprises a casing a. filled with oil. A pulley b which is driven by means of a suitable line shaft, of an electric or other motor, is keyed to a hollow shaft a secured to an internally-toothed ring d with which engage planetary pinions e mounted on a disk f. This disk is keyed to a spindle g which drives the drums of the loom, which are not shown in the accompanying drawings. The planetary pinions e engage, on the other hand, with a central pinion h keyed to the spindle j. On the same spindle is mounted at another point a gear is engaging with another gear Z. The two gears k and Z form elements of an oil pump, the body of which is formed by a bottom piece or base m and two cheeks n and n. This pump body is perfectly tight, except however at the points 0 and p where are ar- I ranged ports respectively for the admission of oil into, and escape from, the pump.

In front of the outlet port 32 travels a valve 9 provided with an aperture 1* and suitably designed so as to control the opening and closin of said port. The said valve 1 which constitutes the part for regulating the movement is connected for that purpose in a suitable manner to the parts, (not shown), which drive the carriage of the loom. This connection is made for instance by means of a cable 5 driven by the parts driving the loom carriage, and secured to one of the arms of a lever t pivoted at u, the other arm of which controlled by a spring '0, acts on the drivin spindle of the valve 9.

The working of the device is as follows: The movement of the pulley 6 produces that of the ring (1, the teeth of which are in mesh with the pinions e. If the gears A: and Z are stopped owing to the complete closing of the orifice p by the valve 9, the pinions e driven by the rim d, rotate about the central pinion h which, under these conditions, stands still, and drive the spindle g by means of the disk f keyed to the said spindle. In this case, the highest speed is obtained, which corresponds to the winding on the largest diameter of the cop or spool. The carriage is then in the lowest position that it occupies during the period. WVhen the carriage rises again, it drives, by means of the cable 8 and lever t, the valve 9, the aperture 1' of which gradually uncovers the discharge port 0. As the resistance to the passage of oil decreases, the pinions 7c and Z, and with the same the spindle j and the pinion k, rotate with an increasing speed, the angular speed of rotation of the disk f and consequently that of the spindle 9 being decreased accordingly.

According to thatnature of the work to be done, it is sufiicient to arrange in the valve passage a valve Q provided with an orifice 1' of suitable dimensions. Moreover, the travel of the said valve in said passage is adjusted by suitably mounting the transmission parts .9 t.

The formation of the bottom portion of the spool is effected at low speed by locking the valve in the position corresponding to the maximum opening of the discharge port, the action of the lever t bein temporarily suspended for that purpose by unpletely uncovered. In this case, the gears in and Z rotate without resistance, and the ring (Z no longer drives the pinions e which are rendered loose by the absence of resistance of the central pinion and of the gears of the pump.

The arrangement of thevarious parts of the change speed gear, such as they are shown in the accompanying drawings, is suitable for that type of spinning looms now in use in which the driving pulley is arranged between the gear and the loom, that is to say, in which the driving shaft of the gear is mounted at the same side as the shaft driving the drums. This arrangement makes it necessary to bring about the retarding movement by means of the central pinion. In an equivalent construction of the loom, on the contrary, the retarding movement can be brought about by means of the disk carrying the planetary pinions, in which case the toothed ring is keyed on the shaft 'of the loom. In that case, the gear driven at one end, transmits to the loom at the other end the transformed movement.

Claims:

1. In a change-speed gearing, the combination, with a driving spindle, and an internally-toothed ring thereon; of a driven spindle; a disk fixed to the driven spindle; a pair of diametrically-o posite planetary pinions carried by said 'sk and meshing with the teeth on said ring; a spindle in axial alinement with said driven spindle; a pinion fixed to the last-named spindle and disposed between and" in mesh with the planetary pinions; an oil pum operatively connected with said last-name spindle and having oil inlet and discharge ports; a valve for controlling the discharge port; and means for operating said valve.

2. In a change-speed gearing, the combination, with a driving spindle, and an internally-toothed ring thereon; of a driven spindle; a disk fixed to the driven spindle; a pair of diametrically-opposite planetary pinions carried by said disk; a spindle in axial alinement with said driven spindle; a pinion fixed to the last-na1ned spindle and disposed between and in mesh with the planetary pinions; an oil pump operatively connected with said last-named spindle and having oil inlet and discharge ports; ahollow-valve for controlling the discharge port having an aperture cooperative with said port; and means for reciprocating said valve.

In testimony whereof I have signed tlllS specification in the presence of two subscribing witnesses.

' JEAN JACQUES ALFRED BILLET.

Witnesses:

EMILE LEDRET, HANSON C. Coxn. 

